TABLE 2

Causes of relative bradycardia

Diseases that cause relative bradycardiaa
Infections
 Legionella
 Psittacosis
 Q fever
 Typhus (Rickettsia typhi, Orientia tsutsugamushi)
 Typhoid fever (Salmonella typhi)
 Babesiosis
 Malaria
 Leptospirosis
 Yellow fever
 Dengue
 Viral hemorrhagic fevers
 Rocky Mountain spotted fever
Noninfectious causes
 Beta-blockers
 Drug fever
 Central nervous system lesions
 Lymphomas
 Factitious fever
Diseases not associated with relative bradycardia
Infections
 Mycoplasma pneumoniae
 Streptococcus pneumoniae
 Salmonella (nontyphoidal)

  • ↵a A median increase in heart rate of less than 10 beats per minute for every increase of 1ºC in body temperature.